Hopper-bunker for steamers.



No. 792,311. PATENTED JUNE 13, 1905.

H. BURRELL.

HOPPER BUNKER FOR STEAMERS.

APPLICATION FILED JAN. 18. 1904.

5 SHEETS-SHEET 1.

PATENTED JUNE 13, 1905. H. BURRELL.

HOPPER BUNKER FOR STEAMERS.

APPLICATION FILED JAN. 18. 1904.

5 SHEETS-SHEET 2.

No. 792,311., PATENTED JUNE 13, 1905. H. BURRELL.

HOPPER BUNKER P TEAMERS.

APPLICATION FILED .18. 1904.

5 SHEETS-SHEET 3.

PATBNTED JUNE 13, 1905.

H. BURRELL. HOPPER BUNKER FOR STEAMERS.

APPLICATION FILED JAN-1B. 1904.

5 SHEETS-SHEET 4.

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PATENTED JUNE 13, 1905.

H. BURRELL.

HOPPER BUNKER FOR STEAMBRS.

APPLIUATION FILED JAN.18. 1904.

5 SHEETS-SHEET 5.

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7: zlsdfitorneg UNITED STATES Patented June 13, 1905.

HENRY BURRELL, OF GLASGO\V, SCOTLAND.

HOPPER-BUNKER FOR STEAIVIERS.

SPECIFICATION forming part of Letters Patent N0. 792,311, dated June 13, 1905.

Application filed January 18,1904. Serial No. 189.626.

' To (tZZ whom, it may concern.-

Be it known that I, HENRY BURRELL, of Glasgow, Scotland, have invented certain new and useful Improvements in and Connected with Hopper-Bunkers for Steamers, of which the following is a specification.

This invention relates to improvements in steamers, and more especially to those of the class described in the specification of Letters Patent No. 675,811; and the invention has for its object to provide a coal-bunker arranged to automatically supply coal to the level of the stoke-hold floors and in proximity to the boilerfurnaces, and thereby to reduce labor and the number of stokers and trimmers required. To this end the bunker is constructed so as to have sufficient coal capacity above the level of the boiler-room, and the bunker is of such form and is provided with deck-openings s0 arranged that it will deliver the coal by gravity and practically without trimming through chutes having doorways in convenient posi tions just above the stoke-hold floor or into the hoppers of automatic stokers when the boilerfurnaces are fired by such apparatus. The said hopper-bunker is further provided with a suitably-covered hatchway or hatchways through which it may be filled before the vessel sails and subsequently replenished from the cargo-hold during the voyage, ifrequired, by means of the ships crane or derrick equipment and grabs or other suitable device.

The invention is illustrated in the accompanying drawings, in which- Figure 1 shows the shear-draft, and Fig. 2 the plan, of a cargo-steamer or steam-collier as provided with the improved hopper-bunker. Fig. 3 shows to a larger scale the aft part of the vessel-holds, bunker, and boiler-room. Fig. 4c is a mid-ship section to a still larger scale, showing the boilers; and Fig. 5 is a plan of the same, showing the chutes in connection.

with an automatic stoking arrangement leading from the bunker toward the boilers. Figs. 6, 7, 8, and 9 are part-sectional plans of the hopper-bunker through the lines a a, 6 Z), c c, and (Z (Z, respectively, Fig. 3, showing the positions of the varous openings which direct the fuel toward the boiler-furnaces. Fig. 10 is a sectional elevation showing the relations between thebunker-chutes and portions of the vessel to which coal is delivered by said chutes.

As shown by the drawings, the vessel A is constructed with a hopper-bunker B of relatively large capacity and at a high level, partly to diminish the undesirable stiffness in the vessel of the extreme proportions indicated, but mainly to provide a large coal capacity above the level of the stoke-hold C, in which the boilers D are situated. The size and position of the hopper-bunker are capable of variation and modification to meet different conditions.

The hopper B is of pyramidal or cone shape or formed with sloping sides, so that its entire contents may discharge themselves by gravity toward various points near its lower end, which are furnished with pipes or chutes b, which may correspond in number to the number of the furnaces (Z in the boilers D and lead each toward a separate furnace, the chutes terminating either in doorways b in proximity to the stoke-hold floor or when the boilerfurnaces are fitted with automatic stoking apparatus in the hoppers thereof.

The hopper B lends itself to measuring the consumption of the fuel. Should the supply of coal in the hopper-bunker become exhausted duringa voyage, the crane and grab equip-'.

ment F permits of a reserve coal-supply contained in the lower hold-bunker G, adjoining the hopper-bunker B, being transferred to the latter through a conveniently-re movable hatch way and cover B.

The bunker-hopper when full of coal may be so placed as to raise the center of gravity of the ship, thereby diminishing undesirable stiffness in broad vessels. To facilitate trimming of the ship, a large water-ballast tank H may be formed at the forward part of the vessel.

Having now described my invention, what I claim, and desire to secure by Letters Patent of the United States, is

In a steamer, in combination, the hopperbunker B located over the boiler-room at a high level so as to raise the center of gravity of the steamer, said hopper-bunker having sloping sides so as to discharge its contents by gravity toward various points near its lower end, chutes 7) leading from said points of disof the vessel to balance said hopper-bunker IO charge d0\\"nwardly to the boiler-furnaces, B, shown and described. there being one chute for each furnace, door- In testimony whereoflhave signed my name ways at the lower ends of said chuten, a to this specificationin the presence of two sub- 3 hatchway and cover 13 for said hopper-bunscribing witnesses.

her, a reserve-bunker, crane and grab equip- HENRY BURRELL. nient F for transferring coal from said re- Witnesses: serve-bunker into said hopper-lmnker B, and WVALLAOE FAIRWEATIIER,

a water-ballast chamber H at the forward part J NO. ARMSTRONG, J r. 

